US Bridges

Sth 13 over Fish Creek

Poor

Bayfield County, Wisconsin · 6.7M N JCT Cth a · Structure no. B04009700000000

Built
2002
23 years old
Condition
Poor
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
104 ft
1 main span
Daily traffic
670
2023 count
Owner
State
State Highway Agency

About this bridge

Sth 13 over Fish Creek is a prestressed concrete stringer/multi-beam or girder carrying Sth 13 over Fish Creek in Bayfield County, Wisconsin. It was built in 2002, so it is 23 years old, younger than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 670 vehicles a day, roughly 7% of them trucks, projected to reach 756 by 2043. The structure is 104 ft (31.6 m) long and 38 ft wide. If it were closed, the detour would be 59.7 mi (96 km).

CarriesSth 13
CrossesFish Creek
Location6.7M N JCT Cth a
RouteState Highway 13
Coordinates46.75412, -91.52182
Functional classRural Principal Arterial - Other

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.6 US tons
Inventory rating46.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length104 ft (31.6 m)
Longest span100 ft (30.5 m)
Deck width38 ft (11.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic670 (2023)
Projected traffic756 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed59.7 mi (96 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$673,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sth 13 over Fish Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is Sth 13 over Fish Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does Sth 13 over Fish Creek carry?

About 670 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Sth 13 over Fish Creek?

The structure is 104 ft (31.6 m) long with a longest span of 100 ft (30.5 m) and a deck 38 ft wide.

Who owns Sth 13 over Fish Creek?

It is owned by the State Highway Agency.